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    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
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<body>
    <script type="text/javascript">
        // 定义构造函数
        function Person() {}

        var per1 = new Person();
        var per2 = new Person();

        console.log(Person.prototype); // 打印结果：[object object]

        console.log(per1.__proto__ == Person.prototype); // 打印结果：true
    </script>
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